Check-disk-issuing machine.



E. MARCH.

CHECK DISK ISSUING MACHINE.

APPLICATION FILED JULY 15,1913.

1,079,943, x PatenteddDec. 2, 1913.

ATT'X.

EDWARD MARCH, 0F LONDON, ENGLAND.

CHECK-DISK-ISSUING MACHINE.

Specification of Letters Patent.

Patented Dec. 2, 1913.

Application led July 15, 1913. Serial N o. 779,087..

To all whom. it may concern.'

Be it known that I EDWARD MARCH, subject of the King of rreat Britain, residing at Nos. 17- 21 Tavistock street, Covent Garden, London, England, have invented new and useful Improvements in Check-Disk- Issuing Machines, of which the following is a s aecification.

' i' his invention relates to machines for issuing check-disks` of the kind in which the check-disk, in being issued, operates, byl engagement with the teeth of'a wheel, a registering or counting device. In such a machine a ratchet-wheel is provided` on the spindle ofthe register-wheel, which by the engagement of a pawl therewith prevents the back-rotation of the register-wheel and ythereby also prevents the reinsertion `of a check-disk into the slot from which it is is-V sued. There has also been provided a pawl, which is released by a ramp on a sliding plate to rotrude into the path of one of the teeth o the register-wheel, immediately prior to the complete issuevof a check disk and so lock the wheel against over-running and thus preclude the wrong tooth being 'engaged by the next to be issued checkdisk, which would result in the machine becoming jammed. As, however, three teeth of the wheel are in engagement withthe check-disks during the issue of each checkdisk', the pawl which prevents over-running path of the last of. the teeth until the other two teeth have passed. This allows a very short period for the pawl to get into the operative position and consequently necessitates very accurate fitting and timing of theV pawl and the ramp which displaces same.

According to the present invention, the pawl which prevents over-running is arranged to protrude into the path of the tooth with which it is to engage, immediatel -after the tlrst of the three teeth has move away, thus there is a considerably longer period for the pawl to get into position, thereby removing practically all liability of the pawl failing to arrest the registerfwheel.

A machine` for issuing check-disks, having the 'above described improvement is illustrated on the accompanying drawing, in whichz-v Figure 1 isa longitudinal section, Fig. 2 a front elevation and Fig. 3 an inverted plan.

a. is the register-wheel, b are the checkdisks andro is the slide, which on being re,

ciprocated by a handle (l, crank e and connectin rod f, thrusts the lowermo'st of the pile o` check-disks b beneath the registerwheel a, whereby` the check-disk b so advanced, pushes out the check-disk' b previously at rest beneath the register-wheel a, and issues same through the issuing slot g of the machine see Fig. 2. 0n the issue of a check-disk, theregister-wheel a is angularly displaced, a thick tooth al bein in engagementx with a central aperture o the check-disk b which is issued, a thin tooth a2 being, on advancement of .the check-disks, engaged by the leading edge of the next check-disk b, which nally comes to rest beneath the wheel, owing to the completion of the working stroke of the slide c, with a thick tooth in engagement with the central aperture of such check-disk. The'drawing shows the register-wheel a ini the position of rest and the slide o in the retracted position, from which it is about to be advanced to issue a check disk.

h1 is the pawl which by engagement with the ratchetwheeL z. on the spindle of the 'register-wheel a., precludes back-running.

Beneath the register-wheel a is a pawl c'. This pawl i is raised b y a, spring i1 into the path of the thick teet wheel a, to prevent over-running thereof. The pawl z' is in the plane of the thick teeth al, but cannot be engaged by the thin teeth a2 of the wheel a, as these teeth are arranged laterally out of the plane of the pawl 2'-, as shown in Fig. 2. As the pawl cannot be struck by the thin teeth a2 of the wheel a, as soon as one thick tooth al has been moved away from the range of the pawl i, the latter can atv once be set in the path of thenext' thick tooth al, without waitin for the intermediate thin tooth to pass. his is eifected as follows On the ret-raction of the slide c, it strikes a shoulder 7'1 of a sliding plate and retracts the latter. A ramp k on t e plate j is thereby drawn against a roller 2 on the pawl z', and withdraws the latter from the path vof the thick teeth a1. `This position of the parts is illustrated on the drawing. On the forward or working stroke of the slide c, a spring-raised dog Z strikes a shoul` der m on the slide j and displaces the latter and with it its ramp k from engagement with the roller 2 of the pawl and the pawl alof the register` e' is lifted, by its spring l into the path of the next thick tooth a?. The previously held thick tooth a1, will have just been sli htly .advanced by the advance of the two c eckdisks b, by the slide c, On the continued forward stroke of the slide c, the dog Z is moved from engagement with the shoulder m of the sliding plate j, by a roller Z1 on the l dog Z riding along a fixed ramp n.

I claim:

l. In a check-disk issuing machine, a register-wheel, teeth on said register-wheel a plurality of which teeth are engaged by. the said check-disks on issue of a check-disk, a pawl and means for permitting said pawl to protrude into the path of the last of said' 4said pawl and means for permitting said c pawl to protrude into the path of said teeth in its plane immediately after one of said teeth in its plane has been moved away therefrom. l

3. In a check-disk issuing machine, a pawl, a register-wheel, teeth on said register-wheel LOF/asie in the plane of said pawl, teeth on said 30 register-wheel laterally out of the plane of said pawl, a reciprocating slide, a sliding plate, a shoulder on said plate in the rearward path of said slide, a ramp on said plate, a dog on said slide, a shoulder on said plate in the forward path of said dog and a fixed ramp on said machine' alongside the path of said dog.

4. In a check-disk issuing machine, a pawl, a register-Wheel, teeth on said registe1wheel in the plane of said pawl, 'teeth on said register-wheel laterally out of the'plane ofsaid pawl, a reciprocating slide, a sliding plate, ashoulder on said plate in the rearward path of said slide, a ramp on said y plate, a roller on said pawl in the path of said ramp, a dofg on said slide, a shoulder on said plate in the forward path of saidl dog, a roller on said dog, and a fixed ramp on said machine in the path of said roller on said dog.

In testimony whereof I have-signed my name to this specification in the presence of 

